At Handleman, I primarily designed and developed barcoded labels, called "tickets", on the IBM Series/1 in IBM's
Event Driven Language (EDL) and Series/1 Assembly Language.
I wrote to print tickets and maintain the data from which the tickets were generated coded in
QMS Magnum V,
for the C.Itoh Ion Deposition in its native language
and in Esselte Meto's
Kodescript
for its LIS 1120 tag and label printer.

During my time at the Handleman Company, I also taught myself the C programming language, into which I converted
the EDL code to generate the tickets and ran on PC's running Microsoft DOS and IBM OS/2 2.1.